5.32 Data class attributes Data class name and data class description (DC) Data set organization (RECORG) and data set name type (DSNTYPE) Record format (RECFM) and logical record length (LRECL) Key length (KEYLEN) and offset (KEYOFF) Space attributes (AVGREC, AVE VALUE, PRIMARY, SECONDARY, DIRECTORY) Retention period or expiration date (RETPD or EXPDT) Number of volumes the data set can span (VOLUME COUNT) Allocation amount when extending VSAM extended data set Control interval size for VSAM data components (CISIZE DATA) Percentage of control interval or control area free space (% FREESPACE) VSAM share options (SHAREOPTIONS) Compaction option for data sets (COMPACTION) Tape media (MEDIA TYPE)